New sites should have everyone as members

Question

When I create a new site in Sharepoint Online, the Members and Visitors groups do not include everyone.

How can I set up Sharepoint so that new sites will have "Everyone except external users" as Members?

Answer 1

When creating a new site, you need to choose "Public" under privacy settings. Then the new site will have "Everyone except external users" as Members. As the below picture shows: